Verify/edit bash history command before executing it

shopt -s histverify

Bash history commands are those that begin with the character ! (eg. the most popular 'sudo !!' Explained here => http://www.commandlinefu.com/commands/view/13). By default bash immediately executes the history command. Setting this shell option will make bash first allow you to verify/edit an history command before executing it. To set this option permanently, put this command in ~/.profile or ~/.bashrc file. To unset this option issue following command. shopt -u histverify

Sample Output

$ date
Thu Oct 27 11:25:51 EST 2011
$ !!                          #COMMAND EXECUTED INSTANTLY
date                                
Thu Oct 27 11:25:54 EST 2011

$ shopt -s histverify 
$ date
Thu Oct 27 11:26:05 EST 2011
$ !!
$ date   #COMMAND WAITING TO BE VERIFIED/EDITED. PRESS ENTER WHEN DONE.

By: b_t

2011-10-27 00:33:34

history bash

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lazaar43 · 11 weeks ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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